The existence of the International Liaison Committee on Resuscitation (ILCOR) has permitted the collaboration regarding resuscitation at an international level. The first definitions and recommendations regarding the report of cardiac arrest cases were developed in 1991 for the Out of Hospital Cardiac Arrest, and in 1997 for the In Hospital Cardiac Arrest. The Utstein definitions, which are in their revised and commonly adopted shape by the work group of ILCOR in 2002, at Melbourne, were translated and are available for anyone who wants to involve in the resuscitation study. Several registries of cardiac arrest are presented in this paper, The European registry of the cardiac arrest, the Belgian, the Swedish, the German, the Spanish, the Dutch, the French, and the registries from the United States of America. Last but not least, the Romanian Registry of the Cardiac Arrest is presented as it represents an initiative of the Romanian National Counsel of Resuscitation. The perspectives of a unique European register for the cardiac arrest has inspired this initiative, which has as a base the example of other European registers and the Utstein reporting model. In the first stage, the register participation was limited to the Emergency Departments of the Emergency Hospitals. Because the European purpose was to develop a smooth system of reporting the cardiac arrests that took place out of hospital, an integration of the pre-hospital events has followed, by collaborating with the Ambulance Services. Other characteristics, as the graphic representation of the Register data, are in progress of development, testing and implementing.